Razor and blade stropper.



B. W. COLE. RAZOR AND BLADE STROPPER. APPLICATION FILED HAB..16,1910.

Patented May 14, 1912.

Atfo r n eys geant: @l lPlZtJE.

ELISHA W. COLE, OF RICHMOND, VIRGINIA.

RAZOR AND BLADE STROPPEB Specification of Letters Patent. Applicationfiled March 16, 1910.

Patcntedlllay 14, 1912. Serial No. 549.587.

To all whom it may concern Be it known that I, ELISITA W. Conn, acitizen of the United States, residing at Richmond, in the county ofHenrico and State of Virginia, have invented a new and useful Razor andBlade Stropper, of which the following is a specification.

This invention relates to razor and other blade stropping devices suchas are. used particularly for sharpening the blades of safety razors,although the device of the present invention may be used in otherconnections and with other types of blade if desired.

In automatic stropping machines as usually constructed, the relativemovement between the strop and the frame in which the blade is mounted,is depended upon to rock the blade so as to bring the proper edge intoposition to be sharpened. The greatest dil'liculty experienced in themanufacture and use of razor stroppers resides in this mechanism forrocking the blade holder. Unless this mechanism acts with absoluteprecision and with the necessary degree of rapidity, the blade is veryapt to sever the strop.

lVith the foregoing considerations in view, the principal object of thepresent invention is to provide reliable, accurate and quick actingmechanism for operating the blade holder for either one orig n or twoedge blades, whereby to avoid the possibility of cutting the strop, andalso to increase the eliiciency of the device generally.

.5. further object of the invention is to arrange the blade holder in animproved manner and position so as to facilitate the operation of'ilacing' the blade in mid rcmoving the same from the stropping machine.

With the foregoing and other objects in view which will appear as thedescription proceeds, the invention resides in the core hination andarrzmgemcnt of parts and in the details of coi'istruction. hereinafterdescribed and claimed, it being understood that changes in the preciseembodiment: of invention herein. disclosed can be made within the scopeof the claim without departing l'rom the spirit of the invention.

In the accompanying drawing forming part or this specification :-Figure1 is an end elevatii'm of a stropping machine c0nstructcd in accordancewith the present invention. .t ig. 2 is a perspective view of the deviceshowing the two frames thereof in open or separated position, wherebythe blade holder which is mounted. on one of said frames and is entirelyout of connection with the other of said frames, is in readilyaccessible position so asto permit the operation of placing the bladein. or remow iug' the smile from the device to be expo ditiouslypcrformech Fig. 3 is a horizontal section taken through the shopping;machine. Fig'. alis a section on the line of Fig. 3.

Like reference numerals indicate corresponding parts in the dill'ercntfigures oi the drawings.

Generally outlined, the machine oi. the present invention comprises amain roller with which are pivotally connected :1 pair of guide framesadapted to be closed in substantially the manner of an ordinarvpocket-book. One of these frames carries l rocking blade holder which isoperated by said main roller and is entirely tXPOHttl when said framesare open. Loosely sur rounding, the main roller is an ordinary metalsleeve, and the strop which is guided by said l rau'ics', is loopedaround this loose sleeve. 'hen the sirop is pulled in on direction orthe other, the trictional cugagw ment between the interior or bore otthe loose sleeve and the exterior or periphery of the main rollerimparts sulliriont 1uo\'c ment to said main roller tow-nose it, to rockthe blade holder into position to cause both edges oi the blade heldthereby to engage the oppositely moving portions of the st rop. so as toollicct simultaneous sharpening ot the two edges of the blade. Alter thel()(). '(5 sleeve by its trictioi'ial engagement with the main rollerhas rocked the blade holdei: to proper position, the continuediuovt-uu-ut ol' the strop in the same direction is pin-milled either bythe strop Slitlll'lg loosely around the sleeve, or by the sleeverotating loosely on the main roller.

The reference numeral 1 indicates the main roller which is provided atitsflcuds with truuuions or rxteusious upon which I are pivotiai'lymounted the arms 3 and 4- ol' the swinging Frames A and 13. Likewisepivotally .:ouncctc(l with the truuuious or extensions is a bracket 5which is provided I with a suitable ring or fastening device b by meansof which the stropper may be an- }chorcd or connected with a. wall orsupport.

other Loosely surrounding the main roller 1 is a metal sleeve 7 which ispreferably of a slightly larger diameter than the roller 1 so as toavoid the possibility of the sleeve sticking to and positively rotatingwith the roller, and yet produce suflicient frictional engagementbetween the sleeve and the roller to cause the sleeve to rotate theroller when necessary. Looped around the sleeve 7 is the razor strop 8which serves to pro duce the oppositely movable stropping surfaces 9 and10.

Each of the frames A and B preferably is provided with two looselymounted or idle rollers 11 and 12 which lie on the outer sides of thestrep as shown in Fig. 3, and are located opposite the cutting edges 13of the blade 1d so as to hold the razor strop against displacement atthe points thereof which are engaged by the edges of the razor blade.The two frames A and B are adapted to be locked securely together attheir free ends in the position shown in Figs. 1 and 3, by means such asthe spring catches 15, each of said catches being bent as indicated at16 whereby said catches will grip'each other securely when the framemembers A and B are moved together.

The blade holder, which is indicated generally by the reference letter Cis pivotally connected with the frame A and consists preferably of ashaft 17 journaled at its opposite ends in lugs 18 formed on the frameA. The shaft 17 is provided, intermediate the. sides of the frame A witha flattened blade receiving portion 19 on which are mounted a pluralityof positioning pins 20, which are adapted to fit through theperforations in the double edged blade so as to position, the sameproperly upon theblade holder. The blade is held in engagement with thepositioning pins 20 and the blade receiving portion 19 by means such asthe bar 21 which is pivotally connected at 22 with the portion 19. Themeans for locking the bar 21 in engagement with the portion 19preferably consists of a longitudinally movable rod 23 which is mountedin a groove 24. formed in the shaft 17., At its inner end thelongitudinally movable rod extends through an .ear or guide and engagesthe freev end of the bar 21 so as to hold the same locked inengagen'ient with the blade 14 so long as the bar 23 is pushed inward.It will be noted from Fig. 2 that when the frames A and B are .open, theblade holder 0 is entirely exposed, and by manipulating the rod 28 theblade can be easily and quickly placed in position.

The means for rocking the blade holder C preferably consists of thecrank arm 26 which is formed integral with the shaft 17 and at its outerend is bent as indicated at 27 so as to fit into a slot 28 formed in theouter end of a crank arm 29 which is rigidly connected in any suitablemanner with the main roller 1.

In order to hold the strop in proper relation to the blade holder, theframe A in addition to the idle rollers 11 and 12 is provided with anenlarged idle roller 30 which is disposed on the opposite side of thestrop from the rollers 11 and 12.

The operation of the device is believed to be obvious from the foregoingdescription taken in connection with the drawing. When the blade is inposition and the frames A and B are locked together, a movement of thestrop 8 in either direction is transmitted through the loose sleeve 7 tothe main roller 1 from which it is transmitted through the rigid arm 29to the crank 26, connected with the blade holder C, thus causing theopposite edges of the blade to be moved into en gagement with theoppositely moving surfaces 9 and 10 of the strop 8 and thussimultaneously sharpened.

The stropping machine of the present invention is strong, simple,durable and inexpensive in construction as well as thoroughly efficientand practical in use.

What is clailned is A stropping machine for double edge bladescomprising a main roller having end extensions, :1 pair of framespivot-ally connected with said end extensions, an anchoring bracketconnected with said extensions, a sleeve loosely surrounding said mainroller, an arm rigidly connected with one end of said main roller andhaving a slot in its outer end, a blade holder having a shaft formedwith a crank extension engaging said slot, interlocking spring catchesfor locking said frames in closed position, and a. razor strop extendingthrough said frames and around said loose sleeve.

In testimony that I claim the foregoing as ELISHA \V. COLE.

Witnesses J. P. CAMPBELL, Geo. B. PITTS.

